Buffalo Sabres Sam Reinhart (23) and Pittsburgh Penguins' Brian Dumoulin (8) work for position during the first period of an NHL hockey game, Friday Dec. 1, 2017, in Buffalo, N.Y. (AP Photo/Jeffrey T. Barnes)

Buffalo Sabres Sam Reinhart (23) and Pittsburgh Penguins' Brian Dumoulin (8) work for position during the first period of an NHL hockey game, Friday Dec. 1, 2017, in Buffalo, N.Y. (AP Photo/Jeffrey T. Barnes)